Steering gear rack air hole drilling machine tool

Abstract

The utility model relates to the technical field of drilling machines, in particular to a steering gear rack air hole drilling machine tool which comprises a machine frame, two second servo drilling power heads are arranged above the machine frame, and the axis of the movable end of each second servo drilling power head and the axis of a bar are arranged in a perpendicular crossing mode. A first servo drilling power head is installed on the top of the rack, and the axis of the movable end of the first servo drilling power head and the axis of the bar are arranged in an inclined and crossed mode. According to the scheme, a vertical hole is drilled in the surface of a bar through the second servo drilling power head, an inclined hole is drilled in the surface of the bar through the first servo drilling power head, the second servo drilling power head and the first servo drilling power head can conduct hole opening operation at the same time, the machining requirement of the steering gear rack is met, sequential hole opening operation is not needed, and the machining efficiency is improved. And clamp clamping of the workpiece does not need to be adjusted repeatedly, and the machining efficiency of the steering gear rack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling machines, in particular to a steering gear rack air hole drilling machine tool. Background Art

[0002] In the process of drilling holes for steering gear racks, a drilling machine is required to drill holes in the workpiece to meet the installation requirements of the workpiece. The workpiece processing requires two vertical holes and one inclined hole to be drilled on the surface of the metal bar. Currently, the existing equipment is a general vertical or horizontal drilling machine, and there is no special processing equipment adapted to this part. Therefore, a special clamp with an adjustment function is required to control the clamping angle of the metal bar, and the clamping needs to be adjusted multiple times according to different drilling positions and angles. This operation method will waste a lot of working time and reduce the drilling efficiency of the steering gear rack. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a steering rack air hole drilling machine tool.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a steering gear rack air hole drilling machine tool, including a frame, a rod placing mechanism is provided on the top of the frame, two second servo drilling power heads are provided above the frame, the axis line of the movable end of the second servo drilling power head is vertically crossed with the axis line of the rod, and a first servo drilling power head is installed on the top of the frame, and the axis line of the movable end of the first servo drilling power head is obliquely crossed with the axis line of the rod.

[0005] Preferably, the bar placement mechanism includes a loading ramp, which is installed on the top of the frame, and a plurality of linearly arranged V-shaped blocks are installed on the top of the loading ramp.

[0006] Preferably, a unloading lifting plate is provided on one side of the loading ramp, a second cylinder is installed at the bottom end of the unloading lifting plate, a movable end of the second cylinder is installed at the bottom end of the unloading lifting plate, a plurality of first unloading racks are installed at the top of the unloading lifting plate, the surface of the first unloading rack is inclined, a second linear slide rail is installed between the side surfaces of the unloading lifting plate and the loading ramp, two guide members are installed on the other side of the loading ramp, a loading lifting plate is movably provided between the two guide members, a first cylinder is installed at the bottom end of the loading lifting plate, a cylinder mounting plate is installed between the bottom ends of the first cylinder and the second cylinder, and the cylinder mounting plate is installed on the top of the frame.

[0007] Preferably, a chain plate elevator is provided on one side of the loading lifting plate, and a slope hopper is provided between the chain plate elevator and the loading lifting plate, one end of the slope hopper is located below the discharge end of the chain plate elevator, and the other end of the slope hopper is located above the loading lifting plate, and the slope hopper is installed on the top of the frame.

[0008] Preferably, a mounting bracket is provided above the feeding ramp, both ends of the mounting bracket are installed on the top of the frame, a third cylinder is installed on the top of the mounting bracket, a cylinder connecting plate is installed at one end of the third cylinder, a third linear slide rail is installed between the side of the cylinder connecting plate and the side of the mounting bracket, a push plate is installed at one end of the cylinder connecting plate, one end of the push plate extends into the inner groove of one of the V-blocks, an adjustment limit plate is installed on the side of the V-block, a screw hole is opened on the side of the adjustment limit plate, and a screw is inserted into the internal thread of the screw hole.

[0009] Preferably, two material discharge troughs are provided on one side of the V-shaped block, and the two material discharge troughs are inclined. One end of the material discharge trough is located below the V-shaped block, and a triangular slope plate is installed at one end of the material discharge trough. Slider connecting plates are installed at the bottom of the two material discharge troughs, and a first linear slide rail is installed between the bottom ends of the two slider connecting plates, and both ends of the first linear slide rail are installed on the top of the frame.

[0010] Preferably, a cylinder mounting seat is provided below the other end of the two material discharge troughs, one end of the cylinder mounting seat is installed on the side of the frame, a second material discharge rack is provided above the cylinder mounting seat, a second guide rod is installed at the bottom of the second material discharge rack, the bottom ends of the two second guide rods pass through the cylinder mounting seat and extend to below it, a fourth cylinder is installed at the bottom of the cylinder mounting seat, and the movable end of the fourth cylinder passes through the cylinder mounting seat and is installed at the bottom of the second material discharge rack.

[0011] Preferably, two symmetrically arranged fixing seats are installed on the top of the frame, a power head mounting plate is installed between the top ends of the two fixing seats, and two of the second servo drilling power heads are installed on the sides of the power head mounting plate through mounting blocks.

[0012] Preferably, a cylinder clamping plate is installed at the bottom of the outer shell of the second servo drilling power head, and the movable end of the second servo drilling power head penetrates the surface of the cylinder clamping plate and extends to the bottom thereof, and parallel pressure plates are provided below the cylinder clamping plate, and the fifth cylinder and the first guide rod are installed through both ends of the cylinder clamping plate, and one end of the fifth cylinder and the first guide rod are installed on the top of the pressure plate, and the first drilling jig sleeve is installed through the surface of the pressure plate, and the first drilling jig sleeve and the movable end of the second servo drilling power head are arranged coaxially.

[0013] Preferably, an inclined drilling template is installed on the surface of the V-block, a second drilling template sleeve is installed through the surface of the drilling template, and the second drilling template sleeve is coaxially arranged with the movable end of the second servo drilling power head.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In this solution, a second servo drilling head and a first servo drilling head are respectively arranged above and on one side of the raw metal bar of the steering gear rack. The second servo drilling head drills vertical holes on the surface of the bar, and the first servo drilling head drills oblique holes on the surface of the bar. The second servo drilling head and the first servo drilling head can perform hole drilling operations at the same time to meet the processing requirements of the steering gear rack. There is no need to perform hole drilling operations in sequence or to adjust the workpiece fixture clamping multiple times, thereby improving the processing efficiency of the steering gear rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a first axonometric view of the steering rack air hole drilling machine tool of the utility model;

[0017] Figure 2 It is a second axonometric view of the steering rack air hole drilling machine tool of the utility model;

[0018] Figure 3 It is a first axonometric view of the bar placing mechanism of the steering rack air hole drilling machine tool of the utility model;

[0019] Figure 4 It is a second axonometric view of the bar placing mechanism of the steering rack air hole drilling machine tool of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure between the push plate and the third cylinder of the steering rack air hole drilling machine tool of the utility model;

[0021] Figure 6 It is a schematic diagram of the connection structure of the second servo drilling power head and the power head mounting plate of the steering rack air hole drilling machine tool of the utility model;

[0022] Figure 7 It is a schematic diagram of the connection structure between the material chute and the first linear slide rail of the steering rack air hole drilling machine tool of the utility model;

[0023] Figure 8 It is a schematic diagram of the corresponding structure of the first servo drilling power head and the V-block position of the steering rack air hole drilling machine tool of the utility model;

[0024] Fig. 9 The utility model is a schematic diagram of the connection structure of the second drilling jig sleeve and the drilling template of the steering rack air hole drilling machine.

[0025] In the figure: frame 1, first servo drilling power head 2, unloading chute 3, fixed seat 4, mounting block 5, power head mounting plate 6, pressing plate 7, second servo drilling power head 8, cylinder connecting plate 9, third cylinder 10, loading lifting plate 11, ramp hopper 12, chain plate elevator 13, guide 14, second linear slide 15, first unloading rack 16, V-block 17, loading ramp 18, unloading lifting plate 19, first cylinder 20, second cylinder 2 1. Cylinder mounting plate 22, second guide rod 23, fourth cylinder 24, cylinder mounting seat 25, second unloading rack 26, third linear slide rail 27, slider connecting plate 28, first linear slide rail 29, mounting bracket 30, screw rod 31, second drilling jig sleeve 32, triangular slope plate 33, push plate 34, rod 35, cylinder clamping plate 36, fifth cylinder 37, first guide rod 38, first drilling jig sleeve 39, drilling template 40, adjustment limit plate 41. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0027] like Figure 1-9 The steering rack air hole drilling machine shown in the figure includes a frame 1, a bar placing mechanism is provided on the top of the frame 1, two second servo drilling power heads 8 are provided above the frame 1, the axis of the movable end of the second servo drilling power head 8 is vertically intersected with the axis of the bar 35, and the first servo drilling power head 2 is installed on the top of the frame 1 by screws, and the axis of the movable end of the first servo drilling power head 2 is obliquely intersected with the axis of the bar 35. The second servo drilling power head 8 drills vertical holes on the surface of the bar, and the first servo drilling power head 2 drills oblique holes on the surface of the bar. The second servo drilling power head 8 and the first servo drilling power head 2 can perform hole opening operations on the bar 35 at the same time, which is adapted to the processing requirements of the bar 35, and there is no need to perform hole opening operations in sequence, thereby improving the processing efficiency of the bar 35.

[0028] The bar placement mechanism includes a loading ramp 18, which is installed on the top of the frame 1 by screws. A plurality of linearly arranged V-blocks 17 are installed on the top of the loading ramp 18 by screws. The inner grooves of the plurality of V-blocks 17 are used for placing the bar 35, providing a support platform for the processing of the bar 35, thereby improving the stability of the bar 35 during processing.

[0029] A material unloading jacking plate 19 is provided on one side of the loading ramp 18, and a second cylinder 21 is installed on the bottom end of the material unloading jacking plate 19 by screws, and a movable end of the second cylinder 21 is installed on the bottom end of the material unloading jacking plate 19 by screws, and a plurality of first material unloading racks 16 are installed on the top of the material unloading jacking plate 19 by screws, and the surface of the first material unloading rack 16 is inclined, and a second linear guide rail 15 is installed between the material unloading jacking plate 19 and the side of the loading ramp 18 by screws, after the drilling of the rods 35 placed on the plurality of V-blocks 17 is completed, the movable end of the second cylinder 21 can be operated to extend, and the movable end of the second cylinder 21 pushes the material unloading jacking plate 19 to move upward, and the material unloading jacking plate 19 pushes the plurality of first material unloading racks 16 to move upward After the multiple first feed racks 16 come into contact with the arc surface of the bar 35, the multiple first feed racks 16 push the bar 35 to move upward. After the bar 35 moves out of the inner groove of the multiple V-shaped blocks 17, the bar 35 rolls on the inclined surface of the first feed rack 16 due to gravity, so that the positions of the bar 35 and the V-shaped blocks 17 are staggered, and then the movable end of the second cylinder 21 is controlled to contract, and the multiple first feed racks 16 drive the bar 35 to move downward. After the two ends of the bar 35 move to the inclined surfaces of the two triangular slope plates 33, the first feed racks 16 continue to move downward. After the first feed rack 16 is away from the bar 35, the bar 35 rolls along the inclined surfaces of the two triangular slope plates 33, which facilitates the unloading operation of the bar 35.

[0030] Two guide members 14 are installed on the other side of the loading ramp 18 by screws, and a loading lifting plate 11 is movably provided between the two guide members 14. A first cylinder 20 is installed on the bottom end of the loading lifting plate 11 by screws. Due to the influence of its internal inclined surface, the bar material 35 in the slope hopper 12 will roll from the slope hopper 12 to the loading ramp 18 due to the force of gravity. The first cylinder 20 is started, and the movable end of the first cylinder 20 pushes the loading ramp 18 upward to move. The loading ramp 18 moves stably between the two guide members 14, which facilitates the loading lifting plate 11 to push the bar material 35 on its top The materials 35 move synchronously. Due to the influence of the top inclined surface of the loading lifting plate 11, the bar material 35 rolls along the side of the loading ramp 18 during the upward movement, so that the bar material 35 can move stably. After the bar material 35 moves to the top of the loading ramp 18, it will move to the top of the loading ramp 18 due to the guiding effect of the top inclined surface of the loading lifting plate 11. The top of the loading ramp 18 is also an inclined surface, which is convenient for the bar material 35 to roll from the top of the loading ramp 18 to the inner grooves of multiple V-shaped blocks 17, so as to complete the feeding operation of the bar material 35, thereby improving the convenience of operation.

[0031] A cylinder mounting plate 22 is installed between the bottom ends of the first cylinder 20 and the second cylinder 21 by screws. The cylinder mounting plate 22 is installed on the top of the frame 1 by screws. The cylinder mounting plate 22 supports the first cylinder 20 and the second cylinder 21, thereby improving the stability of the first cylinder 20 and the second cylinder 21 during operation.

[0032] A chain plate elevator 13 is provided on one side of the loading lifting plate 11, and a slope hopper 12 is provided between the chain plate elevator 13 and the loading lifting plate 11. One end of the slope hopper 12 is located below the discharge end of the chain plate elevator 13, and the other end of the slope hopper 12 is located above the loading lifting plate 11. The slope hopper 12 is installed on the top of the frame 1 by screws. First, a plurality of rods 35 are placed in the silo of the chain plate elevator 13. Because the surface supporting the rods 35 in the silo is inclined, the rods 35 are rolled onto the transport chain plate of the chain plate elevator 13 by the action of gravity, which facilitates the transportation of the rods 35 to the slope hopper 12, completes the transportation operation of the rods 35, and reduces the burden of manual labor.

[0033] A mounting bracket 30 is provided above the loading ramp 18, and both ends of the mounting bracket 30 are mounted on the top of the frame 1 by screws. A third cylinder 10 is mounted on the top of the mounting bracket 30 by screws, and a cylinder connecting plate 9 is mounted on one end of the third cylinder 10 by screws. A third linear guide rail 27 is mounted between the side of the cylinder connecting plate 9 and the side of the mounting bracket 30 by screws, and a push plate 34 is mounted on one end of the cylinder connecting plate 9 by screws, and one end of the push plate 34 extends into the inner groove of one of the V-shaped blocks 17, and an adjusting limit plate 41 is mounted on the side of the V-shaped block 17 by screws. A screw hole is provided on the side of the adjusting limit plate 41, and a screw rod 31 is inserted into the internal thread of the screw hole. After the bar material 35 is conveyed to the inner grooves of multiple V-shaped blocks 17, the position of the bar material 35 is aligned with the servo motor 11 at this time. The position of the service drilling power head deviates. In order to correct the processing position of the rod 35, the movable end of the third cylinder 10 is first operated to retract. The movable end of the third cylinder 10 pulls the push plate 34 to move through the cylinder connecting plate 9. After one end of the push plate 34 contacts the end of the rod 35, it is convenient for the push plate 34 to push the rod 35 to move in the V-block 17. After the other end of the rod 35 contacts the end of the screw 31, it is used to complete the position correction operation of the rod 35 before processing, thereby improving the accuracy of the position of the rod 35 during drilling; the screw 31 spirally moves in the screw hole of the adjustment limit plate 41. By rotating the screw 31, it is convenient to adjust the length of the screw 31 in the inner groove of the V-block 17, and adjust it according to the drilling position or length of the rod 35, thereby facilitating the fixation of the position of the rod 35.

[0034] Two material discharge troughs 3 are provided on one side of the V-block 17. The two material discharge troughs 3 are inclined, one end of the material discharge trough 3 is located below the V-block 17, one end of the material discharge trough 3 is installed with a triangular slope plate 33 by screws, the bottoms of the two material discharge troughs 3 are installed with slider connecting plates 28 by screws, a first linear slide rail 29 is installed between the bottom ends of the two slider connecting plates 28 by screws, and both ends of the first linear slide rail 29 are installed on the top of the frame 1 by screws, and the two material discharge troughs 3 can be used for the rolling of the rods 35, so that the multiple rods 35 with completed drilling are placed in an orderly manner between the two material discharge troughs 3, which is convenient for the staff to take out the rods 35.

[0035] A cylinder mounting seat 25 is provided below the other end of the two material discharge troughs 3, one end of the cylinder mounting seat 25 is installed on the side of the frame 1 by screws, and a second material discharge rack 26 is provided above the cylinder mounting seat 25. The bottom of the second material discharge rack 26 is installed with a second guide rod 23 by screws, and the bottom ends of the two second guide rods 23 penetrate the cylinder mounting seat 25 and extend to the bottom thereof, and a fourth cylinder 24 is installed with screws at the bottom of the cylinder mounting seat 25, and the movable end of the fourth cylinder 24 penetrates the cylinder mounting seat 25 and is installed at the bottom of the second material discharge rack 26 by screws, and the fourth cylinder 24 pushes the second material discharge rack 26 to move upward, and when the second material discharge rack 26 moves between the two material discharge troughs 3, the second material discharge rack 26 limits the rod 35, thereby improving the stability of the rod 35 placed between the two material discharge troughs 3; the provision of the second guide rod 23 improves the stability of the second material discharge rack 26 in the vertical direction.

[0036] Two symmetrically arranged fixing seats 4 are installed on the top of the frame 1, a power head mounting plate 6 is installed between the top ends of the two fixing seats 4, and two of the second servo drilling power heads 8 are installed on the sides of the power head mounting plate 6 through mounting blocks 5.

[0037] A cylinder clamping plate 36 is installed at the bottom of the shell of the second servo drilling power head 8 by screws. The movable end of the second servo drilling power head 8 penetrates the surface of the cylinder clamping plate 36 and extends to the bottom thereof. A parallel-arranged clamping plate 7 is arranged below the cylinder clamping plate 36. The fifth cylinder 37 and the first guide rod 38 are installed at both ends of the cylinder clamping plate 36. One end of the fifth cylinder 37 and the first guide rod 38 are installed on the top of the clamping plate 7 by screws. The first drilling jig sleeve 39 is installed on the surface of the clamping plate 7. The first drilling jig sleeve 39 is coaxial with the movable end of the second servo drilling power head 8. When the movable ends of the two fifth cylinders 37 are extended, the movable ends of the fifth cylinders 37 push the pressure plate 7 to move downward, and the pressure plate 7 drives the two first guide rods 38 to slide between the two ends of the cylinder clamping plate 36, thereby improving the stability of the position of the pressure plate 7. After the pressure plate 7 moves downward to the top of the rod 35, the bottom of the rod 35 is pressed in the inner groove of the V-block 17, thereby improving the stability of the rod 35 during the drilling process. After the drilling of the rod 35 is completed, it is only necessary to operate the movable end of the fifth cylinder 37 to retract. After the pressure plate 7 moves upward, the subsequent ejection operation of the rod 35 is convenient.

[0038] The surface of the V-block 17 is installed with an inclined drilling template 40 by screws, and the surface of the drilling template 40 is penetrated by a second drilling template sleeve 32. The second drilling template sleeve 32 is arranged coaxially with the movable end of the second servo drilling power head 8. The drilling template 40 improves the stability of the connection between the second drilling template sleeve 32 and the V-block 17.

[0039] The functions of the drilling jig sleeve in this solution are as follows: determining the position of the hole to be processed on the bar 35, guiding the tool for processing, meeting the technical requirements of high geometric tolerances of the processed hole and drilling on inclined surfaces and curved surfaces, and improving the positioning accuracy of the drilled hole.

[0040] In this solution, the first servo drilling power head 2, the second servo drilling power head 8, the first cylinder 20 and the second cylinder 21 are all connected to the PLC controller through wires, and the PLC controller is connected to an external power supply through wires.

[0041] In this solution, the third cylinder 10, the fourth cylinder 24 and the fifth cylinder 37 are connected to the solenoid valve through a pipeline, the solenoid valve is connected to the compressor through a pipeline, the gas generated by the compressor is transported to the cylinder through the pipeline, and the solenoid valve can control the flow of gas in the pipeline.

[0042] Working principle: the bar 35 is sequentially conveyed to the top of the loading lifting plate 11 through the chain plate elevator 13 and the slope hopper 12. The loading lifting plate 11 is pushed upward by the first cylinder 20, so that the bar 35 can roll through the inclined surface at the top of the loading ramp 18 to the inner grooves of the multiple V-shaped blocks 17. Then, the movable end of the third cylinder 10 is controlled to retract. The movable end of the third cylinder 10 drives the push plate 34 to push the bar 35 to slide in the multiple V-shaped blocks 17 through the cylinder connecting plate 9. After the other end of the bar 35 contacts the end of the screw 31, it is used to complete the position correction operation of the bar 35. Then, the four fifth cylinders 37 are controlled. The movable end of the rod 35 is extended to drive the bottom of the two pressing plates 7 to press on the top of the rod 35, so that the rod 35 is stably placed in the multiple V-shaped blocks 17. At this time, after the position of the rod 35 is fixed, the movable end of the third cylinder 10 is controlled to extend to reset the push plate 34, and then the second servo drilling power head 8 is controlled to be powered on. The second servo drilling power head 8 first moves the drilling tool downward, so that one end of the drilling tool is inserted into the inner hole of the first drilling jig sleeve 39 and contacts the surface of the rod 35. The second servo drilling power head 8 controls the drilling tool to rotate and move the drilling tool downward to drill a vertical hole on the surface of the rod 35;

[0043] When the second servo drilling power head 8 is powered on, the first servo drilling power head 2 is powered on synchronously, and the drilling tool of the first servo drilling power head 2 passes through the inner hole of the second drilling jig sleeve 32 and opens an inclined hole on the surface of the bar 35;

[0044] After the drilling of the rod 35 is completed, the second cylinder 21 is controlled to push the unloading lifting plate 19 upward. After the unloading lifting plate 19 moves the rods 35 in the multiple V-blocks 17, the rods 35 roll on the inclined surface of the unloading lifting plate 19 due to the force of the inclined surface of the unloading lifting plate 19. Then the movable end of the second cylinder 21 is controlled to contract, and the unloading lifting plate 19 drives the rod 35 to move downward. After the two ends of the rod 35 move to the inclined surface of the triangular slope plate 33, the unloading lifting plate 19 continues to move downward until the rod 35 is released. Then, the rod 35 rolls from the inclined surface of the triangular slope plate 33 to the two unloading troughs 3, and then rolls in the two unloading troughs 3 until the rod 35 contacts the second unloading rack 26 to limit the position, which is used to complete the loading, drilling and unloading operations of the rod 35.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A steering rack air hole drilling machine tool, comprising a frame (1), characterized in that: A bar material placement mechanism is provided on the top of the frame (1), two second servo drilling heads (8) are provided above the frame (1), the axis center lines of the movable ends of the second servo drilling heads (8) are arranged vertically and crosswise with the axis center line of the bar material (35), and a first servo drilling head (2) is installed on the top of the frame (1), the axis center line of the movable end of the first servo drilling head (2) is arranged obliquely and crosswise with the axis center line of the bar material (35); The bar placement mechanism comprises a loading ramp (18), wherein the loading ramp (18) is mounted on the top of the frame (1), and a plurality of linearly arranged V-shaped blocks (17) are mounted on the top of the loading ramp (18); A material unloading lifting plate (19) is provided on one side of the loading ramp (18), a second cylinder (21) is installed at the bottom end of the material unloading lifting plate (19), a movable end of the second cylinder (21) is installed at the bottom end of the material unloading lifting plate (19), a plurality of first material unloading racks (16) are installed at the top end of the material unloading lifting plate (19), the surface of the first material unloading rack (16) is inclined, a second linear guide rail (15) is installed between the side surfaces of the material unloading lifting plate (19) and the loading ramp (18), two guide members (14) are installed on the other side of the loading ramp (18), a material unloading lifting plate (11) is movably provided between the two guide members (14), a first cylinder (20) is installed at the bottom end of the material unloading lifting plate (11), a cylinder mounting plate (22) is installed between the bottom ends of the first cylinder (20) and the second cylinder (21), and the cylinder mounting plate (22) is installed on the top of the frame (1).

2. The steering rack air hole drilling machine tool according to claim 1, characterized in that: A chain plate elevator (13) is provided on one side of the loading lifting plate (11), and a slope hopper (12) is provided between the chain plate elevator (13) and the loading lifting plate (11), one end of the slope hopper (12) is located below the discharge end of the chain plate elevator (13), and the other end of the slope hopper (12) is located above the loading lifting plate (11), and the slope hopper (12) is installed on the top of the frame (1).

3. The steering rack air hole drilling machine tool according to claim 1, characterized in that: A mounting bracket (30) is provided above the loading ramp (18), and both ends of the mounting bracket (30) are mounted on the top of the frame (1). A third cylinder (10) is mounted on the top of the mounting bracket (30), and a cylinder connecting plate (9) is mounted on one end of the third cylinder (10). A third linear guide rail (27) is mounted between the side of the cylinder connecting plate (9) and the side of the mounting bracket (30). A push plate (34) is mounted on one end of the cylinder connecting plate (9), and one end of the push plate (34) extends into the inner groove of one of the V-shaped blocks (17). An adjustment limit plate (41) is mounted on the side of the V-shaped block (17), and a screw hole is provided on the side of the adjustment limit plate (41). The internal thread of the screw hole is connected with a screw rod (31).

4. The steering rack air hole drilling machine tool according to claim 1, characterized in that: Two material discharge troughs (3) are provided on one side of the V-shaped block (17). The two material discharge troughs (3) are arranged at an angle. One end of the material discharge trough (3) is located below the V-shaped block (17). A triangular slope plate (33) is installed on one end of the material discharge trough (3). A slider connecting plate (28) is installed at the bottom of the two material discharge troughs (3). A first linear slide rail (29) is installed between the bottom ends of the two slider connecting plates (28). Both ends of the first linear slide rail (29) are installed on the top of the frame (1).

5. The steering rack air hole drilling machine tool according to claim 4, characterized in that: A cylinder mounting seat (25) is provided below the other end of the two material discharge troughs (3), one end of the cylinder mounting seat (25) is mounted on the side of the frame (1), a second material discharge frame (26) is provided above the cylinder mounting seat (25), a second guide rod (23) is mounted at the bottom of each of the second material discharge frames (26), the bottom ends of the two second guide rods (23) pass through the cylinder mounting seat (25) and extend to the bottom thereof, a fourth cylinder (24) is mounted at the bottom of the cylinder mounting seat (25), a movable end of the fourth cylinder (24) passes through the cylinder mounting seat (25) and is mounted at the bottom of the second material discharge frame (26).

6. The steering rack air hole drilling machine tool according to claim 1, characterized in that: Two symmetrically arranged fixing seats (4) are installed on the top of the frame (1), a power head mounting plate (6) is installed between the top ends of the two fixing seats (4), and two of the second servo drilling power heads (8) are installed on the side of the power head mounting plate (6) through mounting blocks (5).

7. The steering rack air hole drilling machine tool according to claim 1, characterized in that: A cylinder clamping plate (36) is installed at the bottom of the shell of the second servo drilling power head (8), and the movable end of the second servo drilling power head (8) passes through the surface of the cylinder clamping plate (36) and extends below it. A parallel-arranged clamping plate (7) is provided below the cylinder clamping plate (36). A fifth cylinder (37) and a first guide rod (38) are installed through both ends of the cylinder clamping plate (36), and one end of the fifth cylinder (37) and the first guide rod (38) are installed on the top of the clamping plate (7). A first drilling jig sleeve (39) is installed through the surface of the clamping plate (7), and the first drilling jig sleeve (39) and the movable end of the second servo drilling power head (8) are arranged coaxially.

8. The steering rack air hole drilling machine tool according to claim 1, characterized in that: The surface of the V-shaped block (17) is mounted with an inclined drilling template (40), the surface of the drilling template (40) is penetrated by a second drilling template sleeve (32), and the second drilling template sleeve (32) is coaxially arranged with the movable end of the second servo drilling power head (8).

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